Separator



F. PARDEE June 14, 1932.

SEPARATOR Filed May 31, 1929 (III GWWMA Patented June 14, 1932 UNITED STATES PATENT OFFICE FRANK PARIDEE, OF HAZLETON, PENN$YLVANIA, ASSIGNOR '10 ANTHRACITE SEPA- RATOLR. COMPANY, OF HAZLET'ON, PENNSYLVANIA, A CORPORATION OF PENNSYL- VANIA SEPARATOR i Application filed May 31, 1929. Serial No. 367,183.

The invention relates broadly to the combination of a preliminary separator and a final separator. The preliminary separator in one embodiment is adapted to be in the form of an inclined chute having one upright wall of undulating r sinuous form which is intended to effect a preliminary or rough sepa ration of material. From this preliminary separator the material will flow to another separator where a final separation of the two materials is effected.

The invention will be apparent from the following specification when read in connection with the accompanying drawing and will be pointed out with particularity in the appended claims.

In the drawing:

Fig. l is a plan View of the separator embodying the invention;

Fig. 2 is a side elevation thereof with parts shown in section 5 Fig. 3 is a section on line 3-3 of Fig. 1.

Referring in detail to the drawing, the apparatus shown includes a preliminary separator A and a final separator B. The separator A, as shown in detail in Figs. 1 and 3, comprises an inclined chute having a runway suitably curved. The curvature approximates a parabola or portion of an ellipse 1n cross section having a somewhat gentle slope, as indicated at 12, constituting the bottom of the chute and a more abrupt or upright curved part 14 constituting a side wall of the chute. Opposite the portion 14: the chute is i provided with an upright wall 16 of sinuous or undulating form in plan. That is to say, this wall is formed with alternate crests 18 extending inwardly and depressions 20 extending outwardl The spacing [between the crests 18 is relatively great so that the material can flow in a wave-like path. I The crests 18 of the undulations exert a certain amount of friction on the material travelling along the chute. In the handling of coal and slate the action of the sinuous wall results in dragging or holding action on the slate. This causes the slate to follow one path near the undulating wall and the coal to work outwardly to another path. The separation effe'cted by this Wall is by no means complete. However, a large proportion of the slate is compelled to separate out from the coal stream. I

The chute A ,is located in juxtaposition to a suitable separator shown at B which is adapted to effect the final separationof the coal from the slate; In the case illustrated the separator B is the well known type of Pardee separator including a spiral separator runway 22 supported by a central supporting post 24. The material leaving the preliminary separating chute, A falls 'on the uppermost convolution of the runway 22'. A large proportion of the slate is delivered to the spiral runway at the inner portion thereof, a large proportion of the coal of course being delivered near the outer portion of the separator runway.

Heretofore it has been almost a universal practice to deliver the mixture to be separated by means of a simple trough-like chute. By providing a preliminary separator chute of the kind described, the material is delivered to the spiralseparator in such a manner that there is a minimum choking action at the feed end'of the spiral separator. In other words, the chute A effects a preliminary separating action which prevents the objectionable cross travel of slate and coal at the'fee'd end of the spiral. That is, a large proportionof the slate, as indicated'by arrow S, will be delivered to the central part of the spiral separator so that it immediately starts on itstravel along the inner slate thread thereof. The greater part ofthe coal will start its travel from the opposite'side of the separator A as indicated by the arrow C.

Therefore there is little likelihood of the slate being carried off of the separator runway 22 into the coal thread 26 by the moving coal.

The spiral separator is well suited for use in combination with the preliminary inclined chute separator having a sinuous retarding wall. However, it is to such an inclined chute type of separator may be understood that be used in connection with various other separators.

While I have described quite specifically the structural details of the embodiment of the invention herein illustrated it is not to be construed that I am limited thereto since various modifications may be made by those skilled in the art Without departing from the invention as defined in the appended claims.

What I claim is 1. A two stage separator comprising an inclined chute having an upright undulated wall adapted to exert a preliminary spreading and lateral Stratification of the lighter from the heavier material flowing down the chute and a separator adjacent said chute arranged to receive the material from the chute in its spread out and stratified condition and to eifect a final separation thereof.

2. A two stage separator comprising an inclined chute having upright wall of sinuous form in plan adapted to exert a preliminary spreading and lateral stratification of the lighter from the heavier material flowing down the chute and a separator adjacent said chute arranged to receive the material from the chute in its spread out and stratified con dition and to eiiect a final separation thereof.

3. A two stage separator comprising an inclined chute having upright wall of sinuous form in plan adapted to exert a preliminary spreading and lateral Stratification of coal and slate flowing down the chute and a spiral separator adjacent said chute arranged to receive the material from the chute in its spread out and stratified condition and to effect a final separation of the coal and slate.

4. A separator of the class described comprising an inclined chute having a bottom wall and one straight longitudinally extend ing side wall which merges therewith on a gentle curve and an upright wall having a series of inwardly extending crest portions connected by outwardly extending depressed portions.

5. A separator of the class described comprising an inclined chute having one straight longitudinally extending side wall, an upright wall having a series of inwardly extending crest portions spaced equidistant from said straight wall and connected by outwardly extending depressed portions, and a concave bottom wall extending from end to end of the chute and connecting said straight wall with said upright wall.

In Witness whereof, I have hereunto signed my name.

FRANK PARDEE. 

